For someone or something (agent or actor umi-) to weigh something (theme i-) downward, as for fruit to weigh down a branch; for a tree which falls to weight down on another tree or fence.
Imbayug han nabūtong nan lūhud an nadūnut at nagah hinan nun'am.
The drunk person weighed down the rotten fence and so he fell below.
Agogohgoh nan mammang hinan madadyuh un way madamot hi iyattang ti hiyay ibayugan.
The one who positions himself first is to be pitied in going down (an incline) when a heavy (load) is being carried on the shoulders (by two, suspended on a pole), because he is the one where (the load) is weighing downward.